Seiko “Yukisaburo Watanabe” 5E30-5A30 / SCLW004Model: Seiko Yukisaburo Watanabe 5E30 5A30 SCLW004 Year: October 1988 Features: The Origin. The 5E30 5A30 Asterisk was designed by a Japanese fashionista. Yukisaburo Watanabe was hired to contribute to Seikos wonderfully outlandish design era of the 90s with this Asterisk Flip watch. The Design. Watanabe has never publicly spoken about his inspiration for the design, but it bears a striking resemblance to the lesser known Patek Philippe P 1329 from